The sun UV-A and UV-B rays, dust, pollution, etc. tend to enter our skin and create free radicals, which are unstable molecules that destroy cells, proteins, and other structures when in high numbers, Free radicals are unstable because they have unpaired electrons and are constantly trying to capture electrons from other molecules, making them unstable as well Over time, free radicals can damage our skincollagen structure, leading to visible signs of skin damage like roughness, dullness, dark spots, fine lines, etc.